Grass River River Levels

Last Updated: December 4, 2025

The Grass River is a 73-mile-long river located in Northern Michigan.


Summary

Maximum discharge along the river is currently at the reporting a streamflow rate of cfs. This is also the highest stage along the Grass River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Grass River, the highest being situated at an altitude of ft, the .

       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Grass River At Chase Mills Ny
USGS 04265432
786 cfs 4.96 ft -3.91
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Grasse River or Grass River (per 1905 decision of the U.S. Board on Geographic Names) is a 73-mile-long (117 km) river in northern New York, in the United States. The river mainly flows northeast from the foothills of the Adirondack Mountains into the St. Lawrence Valley, making up what is known as the greater St. Lawrence River Drainage Basin along with other tributaries such as the Oswegatchie and Raquette rivers.
The river was named after François Joseph Paul, comte de Grasse(1722–1788), a French admiral and hero of the American Revolutionary War. He defeated British forces in the Battle of the Chesapeake, contributing to their surrender at Yorktown, ending the war.